Internal-combustion engine



' March 2 1926. Y Y 1.. 1.. LUCE ET AL INTERNAL COMBUSTION ENGINE VOriginaJ. Filed 1, 1921 2 Sheets-Sheet 1 L. Matbsonv Arroglsi March 2 1926. Re. 1 231 r L. l LUCE EI'AL INTERNAL COMBUSTION ENGINE Original Filed t- 1. 1921 ZSheets-Sheefl 2 INVENTOR. LL L u. ce-

.L-Matts'on,

, Reiaued Mina-192 PATENT orrlcs'.

LOUIS 1.; Leon nip LEROY mr'rson, oromiuin, cann omim, nssrenons 'ro Lucnm'r'rson nnemn'coxrm, or arm rmcrsco, eamromrn, A eonronarron 3 or ammonia.

,mnnnan-oonvsrron anemia.

I Original No. 1,482,518, dated February 5, 1824, Serial No. 504,546, filed October 1,

1931. Application for U reissue Med. December. 7, 1925. No. 73,897.

- To all whom itmay concern:

Be it known that we, LOUIS L. Leon and LEROY MATTSON, States, residing at Oakland, in the county fof Alameda, State of California, have inqvented a new and useful Internal-' Combustion Engine, of which the iollowing 1s a specification.

This invention relates to an internal combustion engine and is designed more especially as an improvement upon the structure shown'in Patent No. 1,390,572 issued to us on Sept. 13, 1921..

' It is an. object of this invention to re'duce the length of the patented motor as well as the pistons operating therein and to provide the upper portion of each cylinder with an integral wall projecting between the firing 1 and the charging pistons seas to prevent '20 them from contacting with each,ot'her du ing the-operation of the engine; v still further object is to materially reduce friction by keeping the pistons out of c contact with each other. v With the foregoing and other objects in view which willappear as the description proceeds, the invention resides in the coinbination and arrangement of ,parts and in the details of construction hereinafter .de-'

scribed and claimed, it being understood i that, within the scope of what s claimed,

-. A changesin the preciseembodiment of the invention shown can be made without departingfrom the spirit ofltlie invention.

ferred form 0 the ,1nvention" has. been shown. I I I In said drawings: v

Figure 2 is a ure 1. I i Fi re 3- isasection on line 3-3, Fig

I ure a Referring to the'figures by characters of referencell designates the casing of the engins, the same being provided with bearings 2 ,in which is journa ed a shaft 3. .Anjutermediate portion of the shaft'is-joumal'ed section on line 2 2, lfi gin abearing 4carried by a partition formed at the center ot the casing, it being undercitizens' of the United In the accompanying drawings the .pre-

stood, as will be apparent by referring to Figure 2, that the casing I two substantially cyhndrical portions formed integral with each other. as shown orsuitably oined so as to provide the partition 5. in which the bearing 4 is formed.

Extending upwardly from the casing are spaced cylinders 6 the diametersof which are considerably less than-the diameters of the cylindrical portions of the casing 1.

These cylinders are formed integral ,with

the casing and have their inner portions ex tending into the respective cylindrical portions of the casing as shown at 7, these in wardly extending portions being eccentric'ally located within the cylindrical portions .of the casing 1 as shown in Figure 2. They do not, however, contact withthe walls of the caslng. Those portions'of the cylinders pro ecting beyond the casing 1 are provided with a water jacket 8 and suitably mounted 1 ismade up of I within each of the cylinders, preferably at the outer end thereoflis spark plug 9.

The shaft 3 is provided with two .pairs of cranks indicated at 10 and 11. On the crank 10 is mounted a pitman 12 which is pivotally connected, as at 13,.to a charging piston 14 having an eccentrically arranged opening 15 therein into which pro ects one of the exten- 810115 7.. This opening rs necessanlyeccen trically disposed in order to receive the portion 7 which thus serves to guide the piston during its reciprocation within thecasing 1.

By constructing the charging piston as described it becomes necessary to use but one pit-man 12 for each charging piston. The

space between the guide portion 7 andthe wall of the casing 1 and within whicb the piston 14 works is closed at its outerend except for a port. 16 which opens into the cylinder 6 from which saidguide portion 7 extends, the ports 16 of the two cylinders being disposed at opposite sides of the partition 5 as shown clearly-in Figure 1.

The crank-His engaged by a'pitman 17 extendinginto and pivotally attached to a firing piston 18 adapted to work within the guide extension 7 and within the c linder .6. "The head of this piston is provided at its periphery with a recess-19 adapted to register with the port 16-during thB mmPhtion of each stroke of the piston awa from I it's spark plug 9. This headis pre erably curved upwardly and laterally away from the recess portion 19 so that when said recess is registering with the port 16 the head has moved past and has exposed an'exhaust port 20 formed in the cylinden6 diametrically opposite the port 16.

A fuel intake port 21 opens the c lindrical portions of the casing 1, each port being in communication with the Widest portion of 'the space between the guide portion' 7 and the wall of the casing 1 and being located where it will only be exposed or of its suction stroke.

opened when the piston 14 reachesthe limit It will be noted'that each piston 14 has a crescent shaped recess or ocket 22 in its active face.

or the purpose of preventing leakage between the workingparts suitable packing rings 23 can be extended around the pistons 14; the inner ends of the guide portions 7, and the end portions of each, ofithe p stons 18. i

As a means for scaveng ng the engine there is pro\ 'ided between th e cylinders 6 a ipe 24 having nozzles 25' extending there rom for directing steam jets into. the cylinder 6.

directly above and close-to the ports 16.-

Dui'ing the operation of the engine each piston l tmoves downwardly so asto uncover its-intake ort 21 and the partial 4 vacuum produced y this action will result in fuel rushing into the ath of the piston so that on the return str e of said piston it will compress the clia'rge The compressed fuel will be directed into one of ,thecyliri ders 6 as soon as recess 19 comes into regis terwith the port 16 and as soon as this fuel has been directed into cylinder 6 piston 18 will coin ress the fuel by niovin towards the s ar plug 9. Ignition of the charge will t en take place in'the usual manner and; the piston 18 will be driven" away from the closed head of the cylinder, so as to expose 'the exhaust port 20. Just-priorto the openingof the port 16 the recess 19 will expose; one of the nozzles 25 so that aid. of steam under ressure' will bedirected u ward into the c inder and toward the ex aust 611:,

there y scavengin thecylinder and e iminating carbon; T is steam can be supplied to'the nozzles 25 from-an source desired.

Importance is attache to the factthatthe cylinders 6" are eccentrically disposed.

relative to the cylindrical portions of the casing 1 because'it is thus possibleto reduce pisthe number of connections'betweenthe tons and" the crank shaft.- Furt rinoreb'y utilizin' the guide portions-7 thee piston are thereby tion ismaterially and the rendered more eflicient. in operation;

ng 7 be. ma e shorter and more, compact than heretofore, and as the kept out of contact with each other the fric- Having thus described ourinvention, what we claim is: v v

1.'In an internal combustion engine, the combination with a casing having cylindrical portions, of spaced cylinders rigid with the casing and liavin guide portions constitu'ting extensions t ereof. and eccentri- 4 t. cally mounted within the cylindrical porinto each of" tions of the casing, charging pistons mounted for reci rocation between! said guide portions an the walls ofthe cylindrical portionsjof the casing, a firing iston mounted for reciprocation within eac I inder and its extension, a port for directing .fuel from each charging cylinder into each firing cylinder, a fuel su ply port adapted to be opened and close by each of the charging pistons, an exhaust port in each firing cylinder, said. firing pistons constituting means" for opening and-closing the sports connecting theexhaust ports and t charging and firing cyllnders.

2. In an internal combustion engine a casing 4 having 0 lindrical portions, cyl'inders. extending rpm the casing, guide extensions upon the c linders and eccentrically cyldisposed within. t e respective cylindrical portions of the casing, a firing piston mounted for reciprocation in each cylinder and its guide extension, and acharging piston mounted" for reciprocation between each 'guide extension and the wall of the c linx rical P0111011 of the casing, a cranks aft,"

and connections between thecrank shaft and the charging and firing pistons for operating reciprocation between each guide extension and-the cylindrical portion of the casing in which it is located, .means for moving each firing. piston and its charging piston in opposits-directions respectively, each charg ing pisttjifn cooperating with its casing for compressing fuel in the path thereof, a port for conducting fuel from thepathof each charging piston to one of the cylinders, an exhaust portcoinmunicatlng with each cylinder, a scavenging port opening into each cylinder, each firing .piston constitutingmcans for ,controllingthe opening and closof the ports in properly timed relation. In an internal com ing having a. cylindrical and having an eccentric opening j therethrough, a cyhnder, a" guide extension thereon projecting into the opening in the charg ustion engine a eds I v v portion, acharging I piston mounted for rec procation therein menu ing piston, a firing piston 'mountedfor reciprocation within the cylinderand its extension, and a port fon conducting fuel from the path of the charging piston to the path to the firing'piston.

5. In an internal combustion engine a casing comprising cylindrical portions, a crank shaft, charging istons mounted for reciprocation within the respective cylindrical portions and each having an cccentrically arranged opening therein, there being a recess; within the active faceof each piston, pit- 1 man connections" between the crank shaft and the charging pistons, each connection being located where the distance is greatest between the periphery of the piston-and the opening therein.

casing extending outwardly therefrom, and

having charging cylinders'therein, a crank shaft, charging pistons mounted for reciprocation within the cylinders and each having an ecc'entrically arranged opening therein','cy1indrica1 walls providing firing cylinders extending into the said openings, firing pistons mounted for reciprocation in the firing" cylinders, and pitman connections between the crank shaft and, pistons.

8. In aninternal combustion engine, the combination of a crank case and a cylinder casing extending outwardly therefrom, stationary cylindrical walls within the casing providing a charging cylinder near the crank case 'and a smaller firing cylinder further rem oved from the crank case, the firingcylinder wall having a portionthereof extending into the charging cylinder in a manner providing a separating wall between the firing and chargin cylinders, a charging piston in the chargin cylinder between the charging cylinder veal and the said extension of the firing cylinder wall, the charging piston. having an opening for receiving the said extension thereinto, a firing piston in the firing cylinder, a fuel supply port through the cylindercasing adapted to be opened and closed by the charging piston, a

port connectingthe charging and firing cylinders, an exhaust port from the firing cylinder, the last two ports being adapted to be opened and closed by the firing piston, a crank shaft, a pitman connection fromthe shaft to the charging piston, and a pitman connectipn from the shaft to the firing piston, the arrangement being such that in operation a charge of gas is received. through compressed by the charging piston and forced through the "said connecting port into the firing cylinder vand outwardly through the exhaust port after the explosion thereof.

v 9. In an internal combustion engine, the combination of a crank case and a cylinder casing extending outwardly therefrom, cylindrical Walls carried by and within the casing and providing charging cylinders and smaller firing cylinders,--the firing cylinders being further removed from the crank case than the charging cylinders, and each firing cylinder. wall having a 'portion thereof extending into the adjacent charging cylinder in a manner providing a separating wall between the cooperating charging and firing cylinders, a charging-piston in each charging cylinder between the charging cylinder wall and the said extension of the firing cylinder wall, each charging piston having an opening for 7 receiving the said extension therein, a firing piston in each firing cylincylinders, com ressed by'the charging pis tons and force through the said connectlng ports into the firing cylinders ,and outports after the wardly through the. exhaust ex losion thereof;

n testimony whereof, we have hereunto signedour names; v

I LOUIS L. LUOE,

'- LEROY MATTSON.-

the intake port into the charging cylinder,

t are received through the intake ports into the charging a0 der, fuel supply ports through the cylinder 9'5 being adapted to be I 

